RUSH FAMILY. 



93 



1. JUNCUS L. Rush. 



Plants of swamps or wet places; herbage glabrous. Stems usually 

 with spongy pith. Leaves stiff, terete, channeled or flat. Flowers 

 panicled, corymbose or in dense clusters, greenish or brownish. 

 Capsule 3-celled with central placentae or 1-celled with 3 parietal 

 placenta?, many-seeded. For detecting the markings on the seeds of 

 most of the Junci, a # or \ in. objective is necessary. (Classic name 

 for the rush, perhaps from Latin jungo, to join, the stems used for 

 binding.) 



Annuals; roots fibrous. 

 Leaves cauline; stems branched; flowers cymosely arranged in twos or threes 



and second; testa finely striate and cross-lined I. J. bufonius. 



Leaves radical; stems scapiform; flowers solitary, terminal; testa reticulate. 



Perennials; rhizomes mostly stout and creeping. 

 Leaves terete or wantingfpanicle lateral, sessile. 

 Stamens 6. 



Perianth 2% to 3 lines long; anthers 1 line long; capsule oblong-ovate, 



Perianth \% lines long; anthers % line long; capsule sub-globose, slightly 



angled, obtuse, apiculate 4. J. patens. 



■ Stamens 3. 



Perianth 1 line long; anthers % line long; capsule clavate-obovate, obtu>e 



or retuee 5. J. effusus. 



Leaves flat, channeled: panicle terminal. 



Stems terete; leaves not equitant nor transversely ribbed. 

 Rootsiocks tufted; stems naked above, leaty at base; leaves less than % 

 line wide; flowers solitary in a diffuse or rarely compact panicle . . 



6. J. tenuis. 



Rootstocks creeping; stems leafy throughout; leaves 1% lines wide: 



Stems ancip tally compressed; leaves equitant, transversely ribbed by 

 internal septa. 



Leaves 2 to 4 lines wide; stems more or less winged below the nodes; 



seeds reticulate 8. J. xiphioides. 



Leaves J,£to 1 line wide; stems not winged: seeds with, the longitudinal 



lines closely crossed by prominent fine tram-verse ridges 



9. J. phscocephalus. 



1. J. bufonius L. Toad Rush. Annual; roots fibrous; stems 

 1 to 12 in. high, terete, branching from the base, leafy; leaves narrow; 

 inflorescence a dichotomous cyme; flowers solitary and remote, to 

 closely secund or even sub-capitate; perianth lobes 3 lines long, long 

 acuminate, greenish with white scarious margins. 



One of the commonest species, exceedingly variable in size and 

 aspect: Agnews, Miss Cannon; Marin Co.; near the Montezuma 

 school, Solano Co., Jepson; Yountville, Clarke; Knights Valley, 

 Sonoma Co.; West Berkeley; Stege. May-Sept. 



2. J. uncialis Greene. Dwarf Rush. Depauperate annual f to 

 1 in. high; leaves short, radical; stems scapiform, strictly l-flowered; 

 perianth segments \\ to 2 lines long, acute, hyaline, with a prominent 

 mid-nerve; capsule obtuse, apiculate, equaling the perianth; testa 

 reticulate. 



Type locality: "low moist places in fields near Suisun, California, 

 May, 1890," Greene. 

 3. J. Leseurii Boland. Salt Rush. Perennial; rootstock stout- 



2. J. uncialis. 



acute 



3. J. Leseurii. 



flowers clustered 



